[author_cn_name].[cn_title][J].空军工程大学学报:自然科学版,[year_id],[volume]([issue]):[start_page]-[end_page] 基于超构表面的低散射天线阵列- A Low Scattering Antenna Array Based on Meta Surface
文章摘要
朱瑛, 段坤, 杨维旭, 罗歆瑶, 赵俊明, 陈克, 冯一军.基于超构表面的低散射天线阵列[J].空军工程大学学报:自然科学版,2022,23(1):30-36
基于超构表面的低散射天线阵列
A Low Scattering Antenna Array Based on Meta Surface
  
DOI:
中文关键词: 雷达散射截面  微带天线  超构表面  散射缩减
英文关键词: radar cross section  micro strip antenna  meta surface  RCS reduction
基金项目:国家重点研发计划(2017YFA0700201);国家自然科学基金(62071215,91963128, 61801207,61731010)
作者单位
朱瑛, 段坤, 杨维旭, 罗歆瑶, 赵俊明, 陈克, 冯一军 南京大学电子科学与工程学院南京210023 
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中文摘要:
      提出了一种将超构表面与天线阵列组合设计的方法,以同时实现高增益辐射和低背向散射功能。该超构表面由多层金属图案结构组成,对x极化入射波具有透射功能,从而能使天线辐射场低损耗透过;同时,对y极化入射波具有反射相位调制功能,通过将单元按照棋盘格或随机分布排列,可实现y极化入射波的漫散射功能,从而降低天线阵列的后向散射。仿真分析表明,所设计的低散射天线阵列峰值增益为18.8 dB,工作带宽约为12.5%。当探测波为x极化时,10 dB RCS缩减频带为9.5~10.1 GHz,覆盖天线工作频带,最大缩减值为25 dB;当探测波为y极化时,10 dB RCS缩减频带为7.8~12 GHz,最大缩减值高于35 dB。实测结果与仿真分析结果吻合良好。该低散射天线阵列利用超构表面的极化选择特性能实现透、反射功能集成设计,为低散射天线的研究提供了新的思路。
英文摘要:
      This paper proposes a method of combining the meta surface with antenna array to realize high gain antenna array with simultaneous low backward scatterings. The meta surface composed of multi layered structure is characterized by allowing the x polarized wave to transmit the y polarized wave to reflect. Therefore, the radiation from an x polarized antenna array can pass through the meta surface, and at the same time, diffusion scattering occurs when the out of phase meta atoms are used to form the checkerboard or random arrangement. The simulated results show that a peak gain of 18.8 dB and an operating band of around 12.5% can be obtained by the method. When the finding wave is x polarization, the RCS of the antenna reduces by 10 dB from 9.5 GHz to 10.1 GHz and the peak reduction is 25 dB, covering the operating band of the antenna. For y polarized incidence, 10 dB RCS reduction can be achieved from 7.8 GHz to 12 GHz, and the peak reduction is over 35 dB. The measured results are identical with the simulated results. The proposed design method can reduce the RCS effectively by using the transmission reflection selective meta surface, and the above mentioned provides low scattering antenna design with a new path.
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